"Wow Sulu" is a tourism slogan of Governor Sakur Tan, of the province of Sulu, the 15th largest island of the Philippine Archipelago in terms of the area, spanning 1,600 square kilometers. Sulu is a part of the Sulu Archipelago, which stretches from the tip of the Zamboanga Peninsula to the island of Borneo. The main island and also its islets are located between the island-provinces of Basilan to the northeast, and Tawi-Tawi to the southwest.
Sulu is located in the Autonomous Region in Muslim Mindanao. Its capital is Jolo and occupies the middle group of islands of the Sulu Archipelago, between Basilan and Tawi-Tawi. It is home to the historical Sultanate of Sulu.